Screw driver



NOV# 6,v 1934 H. s. FoRsBE-RG 1,979,460Y

SCREW DRIVER Filed Jan. 29. 1932 Yolo IN VEN TOR. f4/V010 J FHSBERG.

Patented Nov. 6, 1934 UNITED STATES PATENT OFFICE Application January29, 1932, Serial No. 589,606

Claims. (Cl. 145-61) This invention relates to new and useful imhandlemay be molded with an opening and the provements in screw drivers. iblade later attached. Although, the handle is An object of the inventionis to provide a screw molded preferably of an imitation hard rubber'driver including a novel handle construction composition it will beunderstood that it may 5 whereby a better grip may be obtained and bemade of any moldable insulating material, as 60 whereby the possibilityof the hand of the opbakelite or other phenolic condensation proderatorslipping over the handle and into engageuct. Also, the material used maycontain a pig-` ment with electrical wires or moving parts of ment togive any desired color or the handles machinery or the like iseliminated. may be painted or the like.

Another object is to provide aiscrew driver in H: idle 10 is molded witha smooth outer or 65 cluding handle se constructed as to prevent palmengaging portion and is provided along a rolling of the screw driverwhen placed on a flat substantial portion or the major portion of its isupporting surface. length with grooves or utes 16 and the ridgesAdditional objects and advantages will become or portions 17 betweensuch grooves or utes are 15 apparent from a consideration of thefollowing preferably knurled or roughened in the molding 7o detaileddescription taken in connection with the operation whereby a better gripmay be obtained :accompanying drawing wherein a satisfactory on thehandle. It will be noted that since the embodiment of the invention isshown. However, handle is molded the grooves 16 are formed in 'it is tobe understood that this description and the handle without anyadditional cost of manu- 20 accompanying drawing are for the purpose offacture and that the portions 17 between said 75 disclosing oneembodiment of the invention and grooves are formed with the knurled orroughened that the invention is not limited to` the details surfacesduring the molding operation and withklisclosed but includes all suchvariationsand out additional expense. Y f ,Y v modifications as .fallwithin the spirit of the ln- Intermediate its ends but toward itsforward Vention and the SCOP@ 0f the appended claims to portion thehandle is shaped to provide a reducedA 8o which claimsreference shouldbe had for a deneck portion, or a portion of `less diameter, 18`. nitionof the invention. For afportion of its length rearwardly from this Inthe drawing: neck 18 the handle inclines as at 19 and it should Figl iSa' Side elevatiOIial View Showing a SCIGW be noted that the grooves orutes are extended driver in` accordance With the invention, theinthrough this inclined portion and are of gradually 85 strument beingshown in use; v decreasing width as they approach the neck or Fig. 2 isa view taken at right angles t0 Fig. 1 the end of the inclined portion.and Oil an enlarged Scale; Forwardly of the neck 18 the handleiisenlarged Fg- 3 iS 9 View Of a DOIiJiOn 0f the blade 0f or flared as at20 to provide a guard. As here Fig. 2, the View being taken at Tight.angles t0 disclosed this guard portion 2 0 is provided with 9o `Fig. 2;six relatively long flat surfaces 21 (see Fig. 5) Fig. il is atransverse sectional view on the line and the adjant ends of thesesurfaces are @om Li4 of Fig-2; nectd by relatively short also preferablyflat Fig. 5 is a transverse sectional view on the line portions 22',When the Screw driver 1S in usd' 40 5--5 Of Fig. 2; and as, for example,in the driving of a screw 23` as 95 Fig. 6 is a transverse sectionalview on the line suggested in Fig- 1, the thumb 24 and the index 6 6 ofFig. 2. finger 25 of a hand indicated at 26 areishown as Referring indetail t0 the'fl'awng the imengaging or pressing forwardly against theproved handle is generally indicated at 10 and guard 20, I the blade iSgenerally indiated by the reference Since this guard represents arelatively abrupt 10G 4ChFiI'ELGiSPY 11- Blade 11 HCIUGS a bit Portion12 increase in the diameter of the handle following and il Shank l3 andintermediate its ends 9 por" the neck portion 18 it will be appreciatedthat Oll [if Shilflk iS .fi'ilid Orl OXJIJGSB' Sides as the guard WH]prevent the hand fron'l Slipping 2X- 14 Whefb the Shank may be gl'ppeWith forwardly over the blade ll and possibly into a Wrench 01 Other W01fOI turning The Shank engagement with charged wires or moving parts 105may be provided with the flat surfaces 14 in any of a machine or thelike. Further, it will be 'convenient or desired manner, as by swaging.readily apparent that the knul-led or roughened The improved handle 10is molded of a suitsurfaces 17 will, to some extent, prevent the handable insulating material and is preferably molded slipping on the handleand it wi1l also be apdirectly onto the blade 1l although if desired thepreciated that since the handle is molded of an 110 insulating materialwith an'end portion of the blade completely embedded in the handle thedanger of shocks in the use of the device is eliminated.

A further feature of the present handle is the flat surfaces 21 beforereferred to. The guard 20 is of an appreciable diameter, and is, infact, of a slightly greater diameter than the knurled portion of thehandle and the at surfaces of the guard portion will therefore preventrolling of the screw driver when the latter is placed on a flat surface.In this connection it will be seen that the portion of the handle to begripped is generally circular in cross section and does not thereforepresent any sharp corners to prevent the handle being tightly gripped.

While the guard portion 20 of the handle is here disclosed assubstantially in the form of a lhexagon it will be understood that theguard may be formed with a greater or lesser number of at surfaces asrequired or as may be more pleasing to provide a bit, said handleenlarged at its inner end to provide a shoulder, and said blade having aportion inwardly of said shoulder ilatted for engagement by a turningtool.

2. In a screw driver, a blade, an elongated handle on one end portion ofsaid blade, said handle comprising a grip portion of one diameter and aneck portion forwardly of and of less diameter than said grip portion,an integral guard portion on said handle at the forward end of said neckportion and comprising a radially extending flange of greater diameterthan said grip portion, and the outer peripherial edge of said guardcomprising a plurality of fiat faces to prevent rolling of the handle ona surface.

3. In a screw driver, a blade, an elongated handle on one end portion ofsaid blade, said handle comprising a transversely circular grip portionof one diameter and a neck portion forwardly of and of less diameterthan said grip portion, a guard portion on said handle at the forwardend of said neck portion and comprising a radially extending flange ofgreater diameter than said grip portion of the handle, and the outerperipherial edge of said flange comprising a plurality of facetspreventing rolling of the handle on a surface.

4. A one piece moulded handle comprising a body including a transverselycircular gripping portion having relatively wide grooves in its outersurface and relatively Wide surface portions between and spacing saidgrooves, said surface portions moulded with depressions and ridges tofacilitate gripping the handle, a guard comprising a radially extendingflange moulded with the handle and of greater diameter than andforwardly of said gripping portion and preventing the hand of anoperator slipping forwardly olf the handle, and the outer peripherialedge of said guard comprising a plurality of flat faces to pre- 100 ventrolling of the handle on a surface.

5. A one piece moulded handle. comprising a body including atransversely circular gripping portion having relatively wide grooves inits outer surface and relatively wide surface portions be- 105 tween andspacing said grooves, a guard comprising a radially extending flangemoulded with the handle and of greater diameter than and forwardly ofsaid gripping portion and preventing the hand of an operator slippingforwardly oi the 110 handle, and the outer peripherial edge of saidguard comprising a plurality of flat faces to prevent rolling of thehandle on a surface.

